import java.util.Locale;
import java.util.Scanner;

public class Test1 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while(scanner.hasNextLine()){
            String string = scanner.nextLine();
            String string1 = string.toLowerCase();
            System.out.println(string1);
        }
    }
}
